C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

High Flow Cats

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Old Sep 24, 2001 | 11:33 PM
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Default High Flow Cats - HELP!

I have been experimenting with my exhaust as of late. I own a 1994 LT1 6-speed convertible with LT4 Hot Cam and LT1 Ported Heads. One of my OEM catalytic converters broke loose and well... expired. So I pulled them off for good measure and headed back to the track and was amazed at the results. .2ET and 2mph improvement in the 1/4 mile. 12.77 at 110.86. Also, with a 90 horsepower jetting NOS, a time of 11.45 at 122.86. The only drawback to the cat-less system is the ungodly exhaust fumes. Does anyone know what type and where I can get some high flow cats without losing this 20 hp increase. Thank you in advance for your thought and comments. They will be greatly appreciated.


[Modified by wheeljo2, 9:33 PM 9/24/2001]
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Old Sep 24, 2001 | 11:49 PM
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Default Re: High Flow Cats - HELP! (wheeljo2)

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Old Sep 25, 2001 | 12:15 AM
  #3  
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Default Re: High Flow Cats - HELP! (wheeljo2)

Congrats on the new found HP, but the real experiment is with eliminator pipes. You not only took the cats out but the entire cat-cack system.

You can buy Random Technology cats directly or from vendors.
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Old Sep 25, 2001 | 01:25 AM
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Default Re: High Flow Cats - HELP! (65Z01)

I bought some Catco Bullet cats($125 for two). They flow way better than stock. I felt this mod when I had it done.
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Old Sep 25, 2001 | 01:44 PM
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Default Re: High Flow Cats - HELP! (Raysur)

Raysur,

Were did you get your CATCO cats?

89'
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Old Sep 25, 2001 | 02:41 PM
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Default Re: High Flow Cats - HELP! (89'Bowtie)

My muffler guy got them for me. You can also order them through Summit Racing.

Here's the link to the exact part I got. It doesn't look like the picture at all. Mine is a 4" diameter round cat. It is around 6-8" long and has a 2.5" inlet/outlet.
http://store.summitracing.com/partdetail.asp?part=18608




[Modified by Raysur, 10:51 AM 9/25/2001]
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Old Sep 25, 2001 | 10:21 PM
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Default Re: High Flow Cats - HELP! (Raysur)

Im in need of the same part. i was thinking random but wasnt sure whether or not to get catco because i heard in the 3 inch inlet outlet the random was better? i have no clue but i need some answers. :D thanks!
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Old Sep 25, 2001 | 10:34 PM
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Default Re: High Flow Cats - HELP! (slickGTA)

You can cut the neck of the Catco cat to make it 3". It's easy to do that.
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